Door and door-frame structure for ovens



April 16,1929. B. c. ZUHARS DOOR AND DOOR FRAME STRUCTURE FOR OVENSFiled Dec. 24, 1927 HTTURNEY Patented Apr. 16, 1929.

BENJAMIN C. ZUHABS, O F MARTIN S FERRY, OHIO.

DOOR AND DOOR-FRAME STRUCTURE FOR OVENS.

Application filedDeeember 24, 1927, Serial No. 242,478.

This invention relates broadly to cook stoves or ranges, and morespecifically to an oven-door attachment for ranges. The primary objectof the invention is to provide a front frame and oven-door'structure forran es embodying novel and improved attaching means for said door.

A further object is to provide a vertically swinging door and door-framestructure for range ovens having concealed attaching means which performthe function of hinges and which provide free and easy movement of thedoor to and from its closed position.

A still further object is to provide a door of the character mentionedhaving associated therewith attaching means which normally tends tomaintain the door in its upright closed position and which positivelyprevents said door from dropping, or falling violently, to itshorizontal open position;

Vith these and other objects in view, the invention resides in thefeatures of construction, arrangement of parts and combinations ofelements which will hereinafter be fully described, reference being hadto the accompanying drawings, in which- Figure l is a rear sideelevation of the.

front frame structure of an oven with a vertically swinging oven doormounted thereon and occupying its upright closing position, illustratingmy invention;

Figure 2 is a vertica-l'section on line 22, Fig. 1;

Figure 3 is a cross section of the frame on line 33, Fig. 1;

Figure 4 is an edge View, on a reduced scale, of the lower end of thedoor, detached, showing the integral tongue; and

Figure 5 is a section taken substantially on line 5-5, Fig. 1, showingthe door occupying its lowered position and omitting the rod and spring.

Referring to said drawings, 1 designates each of the opposite uprightside members of a cast metal front frame for ovens, 2 indicates anintegral transverse member connecting said side membersand defining thelower edge of the door opening 3 which is provided between said sidemembers, and 4: indicates a door adapted for vertically swingingmovement to and from closing relation to said opening.

Provided in each of the side members 1 adjacent to therearwardly-directed longitudinal flange 1' thereof and with its lowerend located approximately in the horizontal plane of the lower end ofthe door opening 3 is a vertical slot 5; and carried on the inner faceof the door 4 adjacent to each of the opposite lower corners thereof isan inwardly extending tongue 6. Said tongues are directed through, andare movable in, said slots as the door is swung to and from its uprightposition, as is best illustrated in Fig. 5 in which the open'position ofthe door is shown in full lines and the closed position in dotted lines.

Formed on the lower edge of the door adjacent to each of its lowercorners is a supporting lug 7 which has a rounded end and which seatswithin a recess 8 provided therefor in the transverse frame member 2.

Each tongue 6 has a downward and inward inclination from the door andhas formed on its inner edge portion adjacent to its free enc aprojecting nose 9 having an upper horizontal edge 9 which is adapted toseat upon the inner face of the adjacent ide member 1 of the frame at apoint directly above the slot 5 when said door occupies its horizontallowered position, as shown in Fig. 5. Thus, said nose serves as a stopwhich limits the extent of downward swinging movement of said door.

The metal of the transverse frame member 2 is curved inwardly andupwardly at the rear of each seat 8 to form a guide 10, as shown in Fig.5, and provided between each lug 7 and the adjacent tongue 6 is a curvedslot 17, open at its lower end, within which said guide 10 is receivedwhen the door occupies its upright position.

Provided in each tongue 6 adjacent to its inner end is a hole 11 inwhich is removably mounted the angular-1y disposed lower end of asubstantially upright rod 12 which has its upper end vertically movablethrough a hole 13 provided therefor in a guide lug let formed on theinner side of the frame member 1 at a suitable point. Attached to saidrod at a suitable point, as to a right angularly bent portion 12 of saidrod located intermediate the ends of the latter, is the upper end of aretractile coil spring 15 which is disposed substantially parallel tosaid rod and which has its lower end attached to said frame member 1 ata suitable point, or to a bracket 16 which is mounted on said framemember.

The springs 15 exert a force which serves normally to maintain the rods12 depressed for holding the tongues 6 depressed and the door in itselevated position, as shown in Figs. 1' and 2 and as shown in dottedlines in Fig. 5. Obviously, the door must be swung to its lowered, openposition against the tension of said spring. The weight of the door andthe strength of said springs are relatively proportioned, however, tocause the door to rest in its horizontal position following loweringthereof. When said door is elevated slightly from its said fully loweredposition the springs exert a force which is approximately suflioient toelevate the doorto its closed posit-ion.

What is. claimed is In an oven, a door frame having sides formed withvertical slots, andhaving a bottom formed with upwardly and inwardlycurved parts forming guides and also form 111g outwardly facing curvedseats, a door having a bottom formed with downwardly extending roundedlugs-rotatable in said seats, tongues carried by the door and movableth'rough said slots, said tongues being formed with curved slots havingopen lower ends for receiving said guides therein and having partsengageable with the sides of the door frame to limit {outward swingingof the door, and yieldable tension means connected to the tongues tonormally hold the door in closed position, and with the curved slotsreceiving the curved guides therein.

In testimony whereof I affiX'my signature.

I BENJAMINC. ZUHARS.

